The denitration performance of the honeycomb catalyst in selective catalytic reduction(SCR)denitration system of a power plant was detected on pilot-scale test bench.Performance parameters such as the denitration efficiency

ammonia escape rate and SO2/SO3 conversion rate were evaluated.The physical and chemical properties of the catalyst was characterized by X-ray diffraction

X-ray fluorescence spectrometer and nitrogen adsorption/desorption methods.The results show that

the catalyst sintering deactivation caused by over high temperature didn't occur.The microcosmic property deterioration resulted from the fly ash's deposition is the major reason for the catalyst's performance lost.On this basis

the lifetime management suggestions for the catalyst was put forward

to provide references for operation management of the power plants.